Net photosynthesis and co2 compensation concentration in three coffee (coffea sp.) genotypes, bean and maize under three temperaturas.

The coffee (Coffea arabica L.) genotypes Colombia, Caturra, and Híbrido de Timor, and bean (Phaseolus vulgaris L.) and maize (Zea mays L.) plants were exposed to three temperatures (15°C, 25°C and 35°C), and net photosynthetic rates (PN) and CO2 compensation concentrations (CO2) were measured. PN i...

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Autores:
Mosquera Sánchez, Lyda Patricia
Riaño Herrera, Néstor Miguel
López Forero, Yamel
Arcila Pulgarín, Jaime
Tipo de recurso:
Article of journal
Fecha de publicación:
2005
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/36543
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/36543
http://bdigital.unal.edu.co/26627/
Palabra clave:
Coffee
Coffea arabica L
CO2 compensation concentration
Leaf temperature
Net photosynthesis
Bean
Maize.
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
Description
Summary:The coffee (Coffea arabica L.) genotypes Colombia, Caturra, and Híbrido de Timor, and bean (Phaseolus vulgaris L.) and maize (Zea mays L.) plants were exposed to three temperatures (15°C, 25°C and 35°C), and net photosynthetic rates (PN) and CO2 compensation concentrations (CO2) were measured. PN in coffee leaves was similar for the three genotypes at 15 °C [5,0 . 5,3 µmol(CO2) m-2s-1] and 35 °C [4,9 . 5,5 µmol(CO2) m-2s-1], but lower at 25 °C [5,4 . 11,7 µmol(CO2) m-2s-1]. CO2 increased with temperature in coffee and bean, while in maize no effect was observed. PN and CO2 values documented in coffee genotypes were typical for C3 plants.